I recently bought the book 'Watch Repair for Beginners' for reference (a project I slightly unwisely agreed to do).

It has some great diagrams, but obviously nothing on these interactive animations (er, naturally, since it is a book).

However the author (Harold C. Kelley) has descriptions for the diagrams similar to a maths proof - like "Warning lever W is raised in position to engage the pin P ... The unlocking lever U lifts the drop lever D ..." - not easy to follow, but maybe if you have the mechanism in front of you!